I've only played it for about 20 minutes so far, but Jundroo has done a damn good job at porting it to mobile devices so far.
My device is an 8th Generation Fire HD 8 which only has about 1.5gb of ram, but it runs the game no problem so far on low settings, hell it even runs it a bit better than my laptop runs it!
All I've really done so far is take the default SimpleBeast rocket for a test drive to Low Droo Orbit and, I must say, the controls work really well on mobile devices. I haven't messed around with the designer yet, but I imagine it is similarly well ported.
Good job Jundroo!
I'm loving this wholesome appreciation.